Device for keying pulleys to shafts.



E. E. FORSHEY.

DEVICE FOR KEYING PULLEYS T0 SHAFTS. APPLIEATION FILED MAR. 25. ms.

1,229 Patented June 12, 1917.

2 SHEETS-SHEET 1.

g'noe'wba; EJ571558 I WWW Wikmooeo EDWARD E. FORSHEY, OF PARKERSBUBG,WEST VIRGINIA.

DEVICE FOR KEYING PULLEYS T0 SHAFTS.

Specification of Letters Patent.

Patented June 12, 191?.

Application filed March 25, 1916. Serial No. 86,674.

To (LZZ whom 2'2 may concern:

Be it known that I, EDWARD E. FOBSHEY, a citizen of the United States,residing at Parkersburg, in the county of food and State of WestVirginia, have invented certain new and useful Improvements in Devicesfor Keying Pulleys to Shafts; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

The object of this invention is to provide a novel type of sectionalpulley that can be conveniently and expeditiously mounted on a shaft andwhich is of such simple construction that it can be manufactured cheaplyand will be durable and eflicient in operation.

Other objects will appear and be better understood from an examinationof that embodiment of my invention of which the following is aspecification, reference being had to the accompanying drawings forminga part thereof, in which:

Figure 1 is an end view of the pulley,

Fig. 2 is a view of the inner side of one of the sections of which thepulley is composed,

Fig. 3 is a fragmental section, taken through the pulley,

Fig. 4; is a section, taken on the line 44 of Fig. 3,

Fig. 5 is a section, taken on the line 5--5 of Fig. 3,

Fig. 6 is a longitudinal section taken through the pulley, and showingthe manner of inserting one of the locking keys to operative position,

Fig. 7 is a detail longitudinal sectional view, taken through one of thesections of the pulley.

Referring to the drawings more in detail, the letter A designates thepulley as an en tirety and B a shaft. The pulley consists of companionsections 1 and 2, each having a central semi-cylindrical bore 3 therein,the said bores being adapted to register when the sections are coupledso as to provide a cylindrical bore for the reception of the shaft B.Each section has also formed therein a pair of substantially T-shaipedslots 4 and 5 located, respectively, on opposite sides of thesemi-cylindrical bore and at points spaced therefrom, and the said slotshave their opposite ends opening into the opposite ends of the sectionsand the ends of the stems of the T-shaped slots open into the inner faceof the sections. When the sections are in coupled position the stems ofthe T-shaped slot in one section registers with the stems of the,T-shaped slots in the companion section and form slots that areI-shaped in cross section, and the walls of the heads of the T-shapedslot in each section designated 6, which connect with the walls of thestems of the T-shaped slots are tapered from one end of the section tothe other, as shown more particularly in Fig. 7. The side walls of thestems of the T- shaped slots also taper from one end of the section tothe other, as shown more clearly in Fig. 3 of the drawings.

The sections 1 and 2 of the pulley are adapted to be locked together bymeans of keys that are of substantially I-shape in cross section, eachhaving the opposite heads 8 and 9 and connecting web 10. The keys taperthroughout their length and have the inner side of the heads thereofalso tapering, as shown in Fig. 6 of the drawing.

When inserting the keys in the slots in the pulleys the sections 1 and 2are sepa rated sufficiently to admit of the large end of the keys beinginserted in the small ends of the slots, the keys then being movedinwardly, resulting in the keys moving the sections toward each otherand causing the same to clamp the shaft therebetween. The sections 1 and2 have those ends into which the narrow ends of the slots open, providedwith lugs 11 in which are mounted screws 12, which are adapted to beadjusted against the smaller ends of the keys, when the latter are inoperative position, and prevent backward movement of the keys. The innerside of one section of the pulley carries pins 13, which are adapted tofit in openings in the inner face of the other section of the pulleywhen the sections are assembled, as shown in Fig. 4.

Having thus described my invention what I claim as new, is:

A pulley comprising companion sections adapted to engage around a shaftand having' their meeting faces provided with pairs of alined slotstapered toward one end of the pulley, one of the sections having lugsformed on one end thereof and located adjaeent the smaller ends of theslots, tapered keys reinovabiy inserted within the slots for Intestimony whereof I affix my signature moving the sections toward eachother and in presence of two witnesses.

for holdin the same in assembled position, 7

and 1neans adjustah1e through the lugs and, EDVVABD "FORSHEY engagingthe smaller ends of the keys and WVitnesses:

adapted to prevent accidental outward J. WV. HILLARD,

movement of the keys. O. G. LITTLETON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

